On (09/10/08 20:20), Andy Whitcroft didst pronounce:
> Add a new utility to list page sizes supported on the system.
>
> Signed-off-by: Andy Whitcroft <[EMAIL PROTECTED]>
Acked-by: Mel Gorman <[EMAIL PROTECTED]>
> ---
> Makefile | 8 +++-
> pagesize.c | 143
> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
> 2 files changed, 150 insertions(+), 1 deletions(-)
> create mode 100644 pagesize.c
>
> diff --git a/Makefile b/Makefile
> index 43dff05..5313d44 100644
> --- a/Makefile
> +++ b/Makefile
> @@ -4,7 +4,7 @@ EXEDIR = /bin
> LIBOBJS = hugeutils.o version.o init.o morecore.o debug.o alloc.o shm.o
> kernel-features.o
> INSTALL_OBJ_LIBS = libhugetlbfs.so libhugetlbfs.a
> BIN_OBJ_DIR=obj
> -INSTALL_BIN = hugectl hugeedit hpoolcfg
> +INSTALL_BIN = hugectl hugeedit hpoolcfg pagesize
> INSTALL_HEADERS = hugetlbfs.h
> LDSCRIPT_TYPES = B BDT
> LDSCRIPT_DIST_ELF = elf32ppclinux elf64ppc elf_i386 elf_x86_64
> @@ -262,6 +262,12 @@ $(BIN_OBJ_DIR)/hpoolcfg: $(foreach
> file,$(HPOOLCFG_OBJ),$(BIN_OBJ_DIR)/$(file))
> mkdir -p $(BIN_OBJ_DIR)
> $(CC) $(CPPFLAGS) $(CFLAGS) $(LIBPATHS) -o $@ $^
>
> +PAGESIZE_OBJ=pagesize.o hugeutils.o debug.o
> +$(BIN_OBJ_DIR)/pagesize: $(foreach
> file,$(PAGESIZE_OBJ),$(BIN_OBJ_DIR)/$(file))
> + @$(VECHO) LDHOST $@
> + mkdir -p $(BIN_OBJ_DIR)
> + $(CC) $(CPPFLAGS) $(CFLAGS) $(LIBPATHS) -o $@ $^
> +
> clean:
> @$(VECHO) CLEAN
> rm -f *~ *.o *.so *.a *.d *.i core a.out $(VERSION)
> diff --git a/pagesize.c b/pagesize.c
> new file mode 100644
> index 0000000..a40686b
> --- /dev/null
> +++ b/pagesize.c
> @@ -0,0 +1,143 @@
> +/***************************************************************************
> + * User front end for using huge pages Copyright (C) 2008, IBM *
> + * *
> + * This program is free software; you can redistribute it and/or modify *
> + * it under the terms of the Lesser GNU General Public License as *
> + * published by the Free Software Foundation; either version 2.1 of the *
> + * License, or at your option) any later version. *
> + * *
> + * This program is distributed in the hope that it will be useful, *
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of *
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
> + * GNU Lesser General Public License for more details. *
> + * *
> + * You should have received a copy of the Lesser GNU General Public *
> + * License along with this program; if not, write to the *
> + * Free Software Foundation, Inc., *
> + * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
> + ***************************************************************************/
> +
> +/*
> + * hugectl is inspired by numactl as a single front end to a large number of
> + * options for controlling a very specific environment. Eventually it will
> + * have support for controlling the all of the environment variables for
> + * libhugetlbfs, but options will only be added after they have been in the
> + * library for some time and are throughly tested and stable.
> + *
> + * This program should be treated as an ABI for using libhugetlbfs.
> + */
> +
> +#include <stdlib.h>
> +#include <stdio.h>
> +#include <errno.h>
> +#include <string.h>
> +#include <limits.h>
> +
> +#define _GNU_SOURCE /* for getopt_long */
> +#include <unistd.h>
> +#include <getopt.h>
> +
> +#define REPORT_UTIL "pagesize"
> +#include "libhugetlbfs_internal.h"
> +#include "hugetlbfs.h"
> +
> +extern int errno;
> +extern int optind;
> +extern char *optarg;
> +
> +#define OPTION(opts, text) fprintf(stderr, " %-25s %s\n", opts, text)
> +#define CONT(text) fprintf(stderr, " %-25s %s\n", "", text)
> +
> +void print_usage()
> +{
> + fprintf(stderr, "hugectl [options] target\n");
> + fprintf(stderr, "options:\n");
> +
> + OPTION("--help, -h", "Prints this message");
> +
> + OPTION("--all, -a", "show all supported page sizes");
> + OPTION("--huge-only, -H", "show only huge page sizes");
> +}
> +
> +static int cmpsizes(const void *p1, const void *p2)
> +{
> + return *((long *)p1) > *((long *)p2);
> +}
> +
> +#define MAX_PAGESIZES 32
> +
> +int main(int argc, char** argv)
> +{
> + int opt_all = 0;
> + int opt_huge = 0;
> +
> + char opts[] = "+haH";
> + int ret = 0, index = 0;
> + struct option long_opts[] = {
> + {"all", no_argument, NULL, 'a'},
> + {"huge-only", no_argument, NULL, 'H'},
> +
> + {0},
> + };
> +
> + long pagesizes[MAX_PAGESIZES];
> + int i;
> +
> + __lh_hugetlbfs_setup_debug();
> +
> + while (ret != -1) {
> + ret = getopt_long(argc, argv, opts, long_opts, &index);
> + switch (ret) {
> + case '?':
> + print_usage();
> + exit(EXIT_FAILURE);
> +
> + case 'h':
> + print_usage();
> + exit(EXIT_SUCCESS);
> +
> + case 'a':
> + opt_all = 1;
> + DEBUG("selecting all page sizes\n");
> + break;
> +
> + case 'H':
> + opt_huge = 1;
> + opt_all = 1;
> + DEBUG("selecting only huge page sizes\n");
> + break;
> +
> + case -1:
> + break;
> +
> + default:
> + WARNING("unparsed option %08x\n", ret);
> + ret = -1;
> + break;
> + }
> + }
> + index = optind;
> + if ((argc - index) != 0) {
> + print_usage();
> + exit(EXIT_FAILURE);
> + }
> +
> + if (!opt_all) {
> + pagesizes[0] = sysconf(_SC_PAGESIZE);
> + ret = 1;
> + } else if (opt_huge)
> + ret = gethugepagesizes(pagesizes, MAX_PAGESIZES);
> + else
> + ret = getpagesizes(pagesizes, MAX_PAGESIZES);
> + if (ret < 0) {
> + ERROR("failed to get list of supported page sizes\n");
> + exit(EXIT_FAILURE);
> + }
> +
> + qsort(pagesizes, ret, sizeof(long), cmpsizes);
> + for (i = 0; i < ret; i++) {
> + printf("%ld\n", pagesizes[i]);
> + }
> +
> + exit(EXIT_SUCCESS);
> +}
> --
> 1.6.0.1.451.gc8d31
>
--
Mel Gorman
Part-time Phd Student Linux Technology Center
University of Limerick IBM Dublin Software Lab
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